K4H281638L Datasheet, PDF (9/32 Pages) Samsung semiconductor – 128Mb L-die DDR SDRAM Specification

K4H281638L
6.0 Block Diagram (2Mb x 16 I/O x4 Banks)
DDR SDRAM
CK, CK
ADD
Bank Select
CK, CK
x4/8/16
LWE
Data Input Register
Serial to parallel
LUDM (x16)
x8/16/32
1Mx32
1Mx32
1Mx32
1Mx32
32
16
16
DQi
Column Decoder
Latency & Burst Length
LCKE
LRAS LCBR LWE
Programming Register
LCAS
LWCBR
LUDM (x16)
CK, CK
Timing Register
DM Input Register
Data Strobe
CK, CK CKE
CS
RAS CAS
WE
LUDM (x16)
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Rev. 1.2 Feburary 2009